i = 1
while i <= 5:
    print('上班星期为： ', i)
    i = i + 1

n = 1
sum = 0
while n <= 100:
    sum = sum + n
    n = n + 1
    assert isinstance(sum, object)
    print(sum)

for i in ['周一', '周二', '周三', '周四', '周五']:
    print('今天是', i, end=',')

print()

for a in ['今天', 'wo', '很', '好啊!']:
    print(a, end='     ')

for i in range(10):
    print(i)

for a in range(1, 10, 2):
    print(a)

for b in range(10, 1, -2):
    print(b)

s = 0
for a in range(1, 101):
    s = s + a
    print(s)

i = 1
while i <= 5:
    print('上班星期为:', i)
    i = i + 1
    t = 9
    while t <= 17:
        print('时间段为:', t, end=" ")
        t = t + 1
    print()

for i in range(1, 6):
    print('上班星期为：', i)
    for j in range(9, 18):
        print('时间段为：', j, end=", ")
    print()

i = 1
while i <= 9:
    j = 1
    while j <= i:
        print('%d*%d=%d'%(j, i, j*i), end=" ")
        j = j + 1
    print()
    i = i + 1

for i in range(1,10):
    for j in range(1,i+1):
        print('%d*%d=%d'%(j,i,j*i), end=" ")
    print()

